Abstract
The catalytic isomerization of m-xylene was studied over a solid acid silicoaluminophosphate type SAPO-11, mixed to HZSM-5 zeolite. The reaction was processed varying the temperature and weight hourly space velocity, using a fixed bed continuous flow reactor. The m-xylene suffers isomerization to p-xylene and o-xylene by molecular displacement of methyl groups. The mixed catalyst was selective to p-xylene at 623 K and 2.5 h−1 with a maximum p/o ratio of 2.05. The ethylbenzene formation was not observed in the products. In this process an apparent activation energy of the order of 13.9 kJ mol−1 was obtained.
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Araujo, A., Domingos, T., Souza, M. et al. m-Xylene Isomerization in SAPO-11/HZSM-5 Mixed Catalyst. Reaction Kinetics and Catalysis Letters 73, 283–290 (2001). https://doi.org/10.1023/A:1014155106147
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DOI: https://doi.org/10.1023/A:1014155106147